Programs in Physics & Physical Chemistry
|[Licence| Download | New Version Template] acka_v1_0.gz(4 Kbytes)|
|Manuscript Title: Ginzburg-Landau fluxoids. See erratum Comp. Phys. Commun. 1(1970)291.|
|Authors: U. Kammerer|
|Program title: GINZBURG-LANDAU-FLUXOIDS|
|Catalogue identifier: ACKA_v1_0|
Distribution format: gz
|Journal reference: Comput. Phys. Commun. 1(1969)10|
|Programming language: Algol.|
|Computer: TELEFUNKEN TR4.|
|Operating system: MV 11.|
|RAM: 4K words|
|Word size: 52|
|Keywords: Solid state physics, Ginzburg-landau theory, Fluxoids, Finite difference method, Superconductors.|
Nature of problem:
The Ginzburg-Landau-equations are solved for a straight single fluxoid containing an (integer) number q of flux quanta, starting from an approximate solution which has to be submitted by the user if q > 1.
An iteration procedure is applied based on successive linearizations of the Ginzburg-Landau-equations. In each iteration step, the system of linearized differential equations is solved by a finite-difference- technique with small intervals near the core and big intervals far outside. The line-energy of the fluxoid is calculated.
If one takes about one hundred lattice points ranging from a radial distance r=0 to about r=7 (reduced units of the Ginzburg-Landau-theory), and if an absolute error of the modulus of the order parameter and of the magnetic field of less than 10**-3 is required, typical running times on the Telefunken TR4 are about 3 minutes, including compilation time (about 1 minute).
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